I'm looking at buying a 01, 250, 4x4, auto with 4.10's running 295/75/16's. My driving is mostly in town with a 2 - 3 time / week commute in moderate hills at approx 35 - 45 mph for 20ish miles. I will also use is for road trips (3 times / year) from Central Ca to Portland Or. Also towing a dump trailer short distances 3 - 4 times / year. I was wanting 3.73's for better mpg but my calculations show me only a 180rpm difference between the two when calculating the tire diameter at 32" and final drive ratio at .71.

Any input appreciated. Thanks

 

4.10s sound like a nice compromise on gears for towing and commuting. Several members here mention the 4.30's or equivalent being a major difference for truck characteristics. Think about how much weight your pushing with just the truck and how it becomes a bit easier.

Any pictures of the truck your looking at? Service records?

 

It's very clean white SB (no lift). Yes service records including transmission overhaul (upgraded Tq converter, shift kit etc). The entire front end has been reworked. All fluids (except brake) are synthetic and it's got only 89K miles. It also has the entire Banks V10 Pro Pac installed on it. The previous 2 owners were very meticulous. The only draw back for me is the SB I was wanting a LB for the extra room and 9 extra gallon tank. But I have been looking for a few months and a truck at this age with the records and work that has been done to it seems rare to find.

 

You'd probably lose mpg in town with the 3.73s and the swap would be near $2.5k.

Sounds like a nice truck, but 11-13 mpg is about as good as its going to get, shorter tires may help a bit.

 

Something is fishy here. The 4.10's were not offered in the 01's with the V10. Only 3.73 or 4.30. How did you find out it has 4.10's?

 

Good pick up. The previous owner did the swap.

 

I pull a ~6000lb camper with mine. 4.10 gear and 16" tires. Best mpg I seem to get with no camper behind me is 10 or 11. With camper about 8 or 9.